Intrauterine adhesions (IUA) refers to the mutual adhesions of the uterine wall caused by endometrial damage for various reasons, which manifests clinically as reduced menstruation or amenorrhea, abdominal pain and infertility, especially infertility, causing great pain to the patients. 90% of intrauterine adhesions are caused by curettage, and in recent years, due to the increase in the rate of abortion and medication abortion, the incidence of IUA has also increased. The incidence of IUA has also increased. With the continuous development of hysteroscopic technology in the past 20 years, there has been a qualitative breakthrough in the diagnosis and treatment of cavity adhesions. Transcervical resection of adhesion (TCRA) has become the standard procedure for the treatment of cervical adhesions, and a successful procedure can restore normal menstruation and improve pregnancy outcomes. The prevention and treatment of cavity re-adhesion after separation of moderate to severe cavity adhesions has been a difficult clinical problem, and the traditional prevention and treatment methods used at home and abroad are not effective, so that the incidence of re-adhesion after separation of moderate to severe cavity adhesions is still as high as 48%~62%, and many patients need to undergo re-operation, and even 3-4 times of cavity adhesion separation has not achieved the ideal effect, which brings great mental pain and economic burden to patients. It is urgent to find a more effective and reasonable method to prevent re-adhesion after separation of moderate to severe cavity adhesions. After summarizing the treatment of a large number of patients with cavity adhesions, we have found a reasonable and effective method to prevent re-adhesion after separation of cavity adhesions, and after more than one year of clinical application, the cure rate of moderate to severe cavity adhesions has been greatly improved, enabling many infertile patients to have a lovely baby. Although the treatment of moderate to severe cavity adhesions is difficult, it is not difficult to cure as long as the treatment is scientific and reasonable, and we hope that patients should not have too much mental burden.